Nova Star in Sagittarius


The Amazing Sky

Nova Star in Sagittarius

It’s a nova needle in a Milky Way haystack – an exploding star appears in Sagittarius. 

On March 15 a very observant amateur astronomer in Australia spotted a star in Sagittarius that wasn’t there the night before. It was a nova, Latin for “new.”

But this was not a new star forming, but an old star in the process of dying.

This star is likely an ancient white dwarf drawing material off a close companion. When the in-falling material builds up on the surface of the white dwarf it ignites in a nuclear explosion, causing the star to brighten, in this case by hundreds of times.

At its peak last week, Nova Sagittarii was just bright enough to see naked eye. It is now below 5th magnitude and barely naked eye. In my long exposure photo it appears lost amid the blaze of stars in the Sagittarius Milky Way.

Still, this was the brightest nova visible…

Ver la entrada original 45 palabras más

Responder

Introduce tus datos o haz clic en un icono para iniciar sesión:

Logo de WordPress.com

Estás comentando usando tu cuenta de WordPress.com. Cerrar sesión / Cambiar )

Imagen de Twitter

Estás comentando usando tu cuenta de Twitter. Cerrar sesión / Cambiar )

Foto de Facebook

Estás comentando usando tu cuenta de Facebook. Cerrar sesión / Cambiar )

Google+ photo

Estás comentando usando tu cuenta de Google+. Cerrar sesión / Cambiar )

Conectando a %s